GAR | Tyres

Document Title: EDR/DSSAD: Logistical information for the 19th informal group session

Document Reference Number: EDR-DSSAD-19-00

Meeting Session: 19th EDR-DSSAD session (14-16 Feb)

Document date: 27 Jan 23 (Posted 27 Jan 23)

This document concerns WP.29 Regulatory Project | Data Storage Systems for Automated Driving and WP.29 Regulatory Project | Event Data Recorders (EDR) for heavy vehicles.

Document Title: Report from the 57th EPPR informal group session

Document Reference Number: EPPR-57-02/Rev.1

Meeting Session: 57th EPPR session (10 Jan)

Document date: 27 Jan 23 (Posted 27 Jan 23)

This document concerns GTR No. 23 | Durability of L-category Vehicle Pollution Control Devices, WP.29 Discussion Topic | L-Category Battery Electric Vehicle Range, and WP.29 Discussion Topic | Measurement of Motorcycle Max Power.

Document Title: Agenda for the 9th GTR 13-UN R134 Transposition task force session

Document Reference Number: R134-09-01

Meeting Session: 9th R134 session (2 Feb)

Document date: 27 Jan 23 (Posted 27 Jan 23)

This document concerns UN Regulation No. 134 | Hydrogen fuel cell vehicle safety and GTR No. 13 | Hydrogen and Fuel Cell Vehicle Safety.

Document Title: Draft Worn Tyres working group status report to GRBP

Document Reference Number: WT-49-04

Meeting Session: 49th WT session (27 Jan)

Document date: 27 Jan 23 (Posted 27 Jan 23)

This document concerns UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance.

Document Title: UN R140: Proposal to amend provisions for steering amplitude

Document Reference Number: GRVA-15-55

Description:

Proposal to add the text, "In case that saturation of the front tyres happens before the above calculated magnitude angle, this angle may be used as the final steering amplitude, but only if this angle is greater or equal to 6.5 A.” based on the following justification:

Reaching fixed amplitude, i.e., fixed steering wheel angular speed due to given 0.7 Hz sine frequency, needs much more torque with quick steering gear ratio systems than with slow steering gear ratio systems, and produces much more wheel steer.
Car behavior (yaw rate, lateral acceleration and thus trajectory) is similar for all amplitudes above approx. 7 to 8 A (i.e., more than 7 times the steering wheel angle corresponding to 0.3 g), because front tires are saturated. More steer of the tires doesn’t provide more lateral force, so yaw rate and lateral acceleration don’t increase. Continuing to increase steering wheel amplitude after front tire saturation doesn’t give more information.
There might appear in the future some vehicles which have significantly low steering gear ratio (i.e., quick steering characteristics) and may need too much steering wheel torque to achieve the 270 degrees sine amplitude at 0.7 Hz (not reachable by conventional steering robots), then jeopardizing the easy approval of future beneficial steering equipment e.g. steering-by-wire systems.

Submitted by: OICA

Meeting Session: 15th GRVA session (23-27 Jan)

Document date: 27 Jan 23 (Posted 27 Jan 23)

Document status: Formal GR review change

This document concerns UN Regulation No. 140 | Electronic Stability Control Systems.
This submission is related to the following document(s):

GRVA-14-30 | UN R140: Supporting information on proposal for amendments Available formats: pdf ppt
GRVA-14-27 | UN R140: Proposal for amendments Available formats: pdf doc

Document Title: UN R78: Proposal for the 06 series of amendments

Document Reference Number: GRVA-15-57

Description:

Text prepared by the GRVA secretariat based on document GRVA/2023/4 as adopted by GRVA during its 15th session to highlight the approval number and marking provisions pursuant to the series of amendments.

Meeting Session: 15th GRVA session (23-27 Jan)

Document date: 27 Jan 23 (Posted 27 Jan 23)

Document status: Approved by GR change

This document concerns UN Regulation No. 78 | Motorcycle and Moped Braking.
This submission is related to the following document(s):

GRVA/2023/4 | UN R78: Proposal for the 06 series of amendments Available formats: pdf doc
GRVA-15-41 | UN R78: Proposal for amendments to GRVA/2023/4 Available formats: pdf doc
GRVA-15-29 | UN R78: “Complex Electronic Control Systems” Annex Available formats: pdf ppt

Document Title: UN R13: Proposal for the 13 series of amendments

Document Reference Number: GRVA-15-56

Description:

Text prepared by the GRVA secretary, based on GRVA/2023/2 as adopted by GRVA during the 15th session, to highlight amendments to the approval number and marking provisions with regard to the series of amendments.

Meeting Session: 15th GRVA session (23-27 Jan)

Document date: 27 Jan 23 (Posted 27 Jan 23)

Document status: Approved by GR change

This document concerns UN Regulation No. 13 | Heavy-Duty Vehicle Braking.
This submission is related to the following document(s):

GRVA/2023/2 | UN R13: Proposal for a new series of amendments Available formats: pdf doc

Document Title: UN R79: Proposal to amend GRVA/2023/6

Document Reference Number: GRVA-15-54

Description:

Revised proposal prepared by the GRVA secretary pursuant to discussions during the 15th session to clarify a logical cascade of actions regarding activation of ACSF B1 and C and the indication on when the vehicle has entered an eligible road based on the following justification:

When the same means is used by the driver to simultaneously activate the Automatically Commanded Steering Function of Category B1 (ACSF B1) and of Category C (ACSF C), both functions switch to standby mode when the vehicle enters an ACSF C eligible road. But if the road is non-eligible to ACSF C, then only the ACSF B1 is activated.
With the current text of the regulation, once the vehicle moves to an ACSF C eligible road, the driver must operate again the means to activate the ACSF C. This second deliberate action is confusing for the driver since it makes the manipulation more complex. The current wording discourages most drivers from using this assistance function.
The proposed wording permits the following, logical, cascade of actions:
1. The driver has done a deliberate action to activate ACSF B1 and ACSF C (on a non-eligible road); then
2. He drives into an eligible road, and is clearly informed thereof; then
3. He initiates a lane change procedure by activating e.g. the direction indicator.
This amendment further clarifies the requirement on the indication of when the vehicle enters an eligible road. It gives some examples of the type of indication to be given to the driver, e.g. additional popup or blinking indication, without being design restrictive.
A dedicated status indication of an ACSF C off-mode is by nature already different from the standby or active indication. Therefore, the driver is already sufficiently informed on a potential status change.
Regarding paragraph 5.6.4.2.3.: While entering the eligible road, the driver may be distracted or annoyed by this “prominent” indication. His attention resources shall be totally available during this phase. So the system would switch automatically to standby mode when fulfilling these two conditions: reaching an eligible and regular lane of travel. This second condition may be fulfilled for example by implementing a suitable time delay or by a direct verification of the lane of travel. These criteria should be explained, agreed between the technical service and the vehicle manufacturer.

Meeting Session: 15th GRVA session (23-27 Jan)

Document date: 27 Jan 23 (Posted 27 Jan 23)

Document status: Approved by GR change

This document concerns UN Regulation No. 79 | Steering Equipment.
This submission is related to the following document(s):

GRVA/2023/6 | UN R79: Proposal for amendments to the 03 and 04 series of amendments Available formats: pdf doc
GRVA-15-53 | UN R79: Proposal for amendments to the 03 and 04 series of amendments Available formats: pdf doc
GRVA-15-52 | UN R79: Proposal for amendments to the 03 and 04 series of amendments Available formats: pdf doc
GRVA-15-30 | UN R79: Proposal for amendments to the 03 and 04 series of amendments Available formats: pdf doc
GRVA-15-09 | UN R79: Proposal to amend GRVA/2023/6 Available formats: pdf doc

Regulation:	UN Regulation No. 107 \| Construction of Coaches and Buses
Document:	Revision 10
Corresponds to:	10 series of amendments (Entered into force on 8 Oct 2022)
Based on:	Document WP.29/2022/53 Proposal to improve evacuation times of M₂ and M₃ vehicles, including new provisions for devices to break window glass.

Regulation:	UN Regulation No. 117 \| Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance
Document:	Revision 4 \| Amendment 6
Corresponds to:	02 series of amendments \| Supplement 14 (Entered into force on 8 Oct 2022)
Based on:	Document WP.29/2022/8 Proposal to introduce provisions for ice grip tyres, clarify provisions on Conformity of Production, sample submissions, and testing methods, and to make editorial corrections and improvements.

Regulation:	UN Regulation No. 41 \| Motorcycle Noise
Document:	Revision 2 \| Amendment 11
Corresponds to:	04 series of amendments \| Supplement 10 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/77 Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably Paragraph 5.4.1 renumbered as paragraph 5.5.1. Paragraphs 5.4. and 5.5. respectively renumbered as paragraphs 5.5. and 5.6.

Regulation:	UN Regulation No. 30 \| Pneumatic Tires
Document:	Revision 3 \| Amendment 10
Corresponds to:	02 series of amendments \| Supplement 24 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/75 Proposal to amend the extended mobility tyre (EMT) symbol following the detection of dimensional inconsistencies within the International Organization for Standardization Working Group (ISO) TC31/SC3/WG19, where the dimension “0,33h” was judged wrong and constituting an unnecessary over constraint and to amend the inflation value to be used for the tyre conditioning when assessing the “flat tyre running mode” of “run flat tyres” and of “extended mobility tyres”.

Regulation:	UN Regulation No. 24 \| C.I. Engine Emissions and Net Power
Document:	Revision 2 \| Amendment 6
Corresponds to:	03 series of amendments \| Supplement 6 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/67 Proposal to clarify the scope and application of the regulation.

Regulation:	UN Regulation No. 107 \| Construction of Coaches and Buses
Document:	Revision 10
Corresponds to:	10 series of amendments (Entered into force on 8 Oct 2022)
Based on:	Document WP.29/2022/53 Proposal to improve evacuation times of M₂ and M₃ vehicles, including new provisions for devices to break window glass.

Regulation:	UN Regulation No. 117 \| Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance
Document:	Revision 4 \| Amendment 6
Corresponds to:	02 series of amendments \| Supplement 14 (Entered into force on 8 Oct 2022)
Based on:	Document WP.29/2022/8 Proposal to introduce provisions for ice grip tyres, clarify provisions on Conformity of Production, sample submissions, and testing methods, and to make editorial corrections and improvements.

Regulation:	UN Regulation No. 41 \| Motorcycle Noise
Document:	Revision 2 \| Amendment 11
Corresponds to:	04 series of amendments \| Supplement 10 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/77 Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably Paragraph 5.4.1 renumbered as paragraph 5.5.1. Paragraphs 5.4. and 5.5. respectively renumbered as paragraphs 5.5. and 5.6.

Regulation:	UN Regulation No. 30 \| Pneumatic Tires
Document:	Revision 3 \| Amendment 10
Corresponds to:	02 series of amendments \| Supplement 24 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/75 Proposal to amend the extended mobility tyre (EMT) symbol following the detection of dimensional inconsistencies within the International Organization for Standardization Working Group (ISO) TC31/SC3/WG19, where the dimension “0,33h” was judged wrong and constituting an unnecessary over constraint and to amend the inflation value to be used for the tyre conditioning when assessing the “flat tyre running mode” of “run flat tyres” and of “extended mobility tyres”.

Regulation:	UN Regulation No. 24 \| C.I. Engine Emissions and Net Power
Document:	Revision 2 \| Amendment 6
Corresponds to:	03 series of amendments \| Supplement 6 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/67 Proposal to clarify the scope and application of the regulation.